In situ synthesis, characterization, and catalytic performance of tungstophosphoric acid encapsulated into the framework of mesoporous silica pillared clay

被引:42
作者
Li, Baoshan [1 ]
Liu, Zhenxing [1 ]
Han, Chunying [1 ]
Ma, Wei [1 ]
Zhao, Songjie [2 ]
机构
[1] Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
[2] China Natl Gold Grp Corp, Beijing 100011, Peoples R China
关键词
In situ synthesis; Tungstophosphoric acid; Montmorillonite; Silica pillared clay; Catalytic oxidative desulfurization; HETEROPOLY ACID; PHOSPHOTUNGSTIC ACID; SELECTIVE OXIDATION; TITANIA; MONTMORILLONITE; MCM-41; OXIDE; ESTERIFICATION; CONDENSATION; ALKYLATION;
D O I
10.1016/j.jcis.2012.03.067
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Mesoporous silica pillared clay (SPC) incorporated with tungstophosphoric acid (HPW) has been synthesized via in situ introducing P and W source in the acidic suspension of the clay interlayer template during the formation of the silica pillared clay. The samples were characterized by XRD, XRF, FT-IR, TG-DTA, N-2 adsorption-desorption, and SEM techniques. The results showed that the HPW formed by in situ method has been effectively introduced into the framework of mesoporous silica pillared clay and its Keggin structure remained perfectly after formation of the materials. In addition, samples with similar HPW loadings were also prepared by impregnation method using SPC as the support. HPW in the incorporated samples was better dispersed into the silica pillared clay than in the impregnated samples. The results of catalytic tests indicated that the encapsulated materials demonstrated better catalytic performance than the impregnated samples in oxidative desulfurization (ODS) of dibenzothiophene (DBT). (C) 2012 Elsevier Inc. All rights reserved.
引用
收藏
页码:334 / 341
页数:8
相关论文
共 48 条
[1]   HPW and supported HPW catalyzed condensation of aromatic aldehydes with aniline: Synthesis of DATPM derivatives [J].
Ajaikumar, S. ;
Pandurangan, A. .
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2008, 286 (1-2) :21-30
[2]   Copper-supported pillared clay catalysts for the wet hydrogen peroxide catalytic oxidation of model pollutant tyrosol [J].
Ben Achma, R. ;
Ghorbel, A. ;
Dafinov, A. ;
Medina, F. .
APPLIED CATALYSIS A-GENERAL, 2008, 349 (1-2) :20-28
[3]   Supported heteropolyacid (HPW) catalysts for the continuous alkylation of isobutane with 2-butene: The benefit of using MCM-41 with larger pore diameters [J].
Blasco, T ;
Corma, A ;
Martinez, A ;
Martinez-Escolano, P .
JOURNAL OF CATALYSIS, 1998, 177 (02) :306-313
[4]   Selective oxidation of anthracene using inorganic-organic hybrid materials based on molybdovanadophosphoric acids [J].
Bordoloi, Ankur ;
Lefebvre, E. ;
Halligudi, S. B. .
JOURNAL OF CATALYSIS, 2007, 247 (02) :166-175
[5]   Spectroscopic observations of hybrid interfaces and gas storage in organo-clays [J].
Bracco, S. ;
Valsesia, P. ;
Ferretti, L. ;
Sozzarti, P. ;
Mauri, M. ;
Comotti, A. .
MICROPOROUS AND MESOPOROUS MATERIALS, 2008, 107 (1-2) :102-107
[6]   In situ nanocrystalline HZSM-5 zeolites encaged heteropoly acid H3PMo12O40 and Ni catalyst for hydroconversion of n-octane [J].
Chen, Lidong ;
Wang, Xiangsheng ;
Guo, Xinwen ;
Guo, Hongchen ;
Liu, Hai'ou ;
Chen, Yongying .
CHEMICAL ENGINEERING SCIENCE, 2007, 62 (16) :4469-4478
[7]   Montmorillonite-based porous clay heterostructures (PCHs) intercalated with silica-titania pillars-synthesis and characterization [J].
Chmielarz, Lucjan ;
Gil, Barbara ;
Kustrowski, Piotr ;
Piwowarska, Zofia ;
Dudek, Barbara ;
Michalik, Marek .
JOURNAL OF SOLID STATE CHEMISTRY, 2009, 182 (05) :1094-1104
[8]  
Cool P., 1998, PILLARED CLAYS PREPA
[9]   Bifunctional conversion of n-decane over HPW heteropoly acid incorporated into SBA-15 during synthesis [J].
Gagea, B. C. ;
Lorgouilloux, Y. ;
Altintas, Y. ;
Jacobs, P. A. ;
Martens, J. A. .
JOURNAL OF CATALYSIS, 2009, 265 (01) :99-108
[10]   The acidity and catalytic activity of heteropoly acid on MCM-41 investigated by MAS NMR, FTIR and catalytic tests [J].
Ghanbari-Siahkali, A ;
Philippou, A ;
Dwyer, J ;
Anderson, MW .
APPLIED CATALYSIS A-GENERAL, 2000, 192 (01) :57-69